Automatic road and surface scraper



Oct. 23, 1923.-

J. s. REYNOLDS AUTOMATIC ROAD AND SURFACE SGRAPER i l Filed Jan. 20.1920 Ream! 0a. 23, 1923.

UNITED STATES JPQAITENT OFFICE.-

J'DSEPH S. REYNOLDS, OF S.A N'1A BARBARA, CALIFORNIA;

AUTOMATIC ROAD AND SURFACE SCRAIER.

Original llo. 1,888,838, dated February 15, 1921; Serial No. 352,902,filed J'anuary 20, 1920. Application for reissue filed August 13, 1923.

To all whom it may concern:

e it known that I, JOSEPH S. REYNOLDS, a citizen of the United States ofAmerica, residing at Santa Barbara, in the county of Santa Barbara andState of California, have invented new and useful Improvements inAutomatic Road and Surface Scrapers, of which the following is aspecification.

This invention relates to earth working elements such as scrapers,and'particularly shovel scrapers, and has for its object to provide animproved combination of tractor and scraper with means for locking thetractor and, scraper in operative scraping relation and readllyoperative to release the scraping shovel from a locked position topermit it to be dumped and to provide means for automatically relockingthe scraper in a given scraping position when the tractor is backedtoward the-scraper. The inven tion consists of the construction, thecombination and in details and arrangements of parts an embodiment ofwhich is illus- ,trated in the accompanying drawings .and

' with the scraper in operative scraping position.

Fig. 2 is a plan view of the structure of Fig. 1.

. ig. 3 is a side elevation showing the dumping position of the scraper.

Fig. 4 is a detail sectional. view of a form of locking means to connectthe scraper body to various angles to the draft beam of the tractor.

Fig. 5 is a cross section "on line 5-5 of The present inventioncontemplates the combination of an earth working element, which in thepresent instance is shown as a scraper of a type indicated at 2 having ascoop or shovel-like body with a flat bottom having an upwardlyextending back portion 3 and parallel side portions 4-l, the transversefront edge of the bottom of the scraper forming a cutting meansindicated at5 although a removable or renewable scraper blade orknife-may be provided if desired, and attaching thereto a suitable draftmeans as a tractor 6 and providing connecting means whereby the settingof the scraper in operative scraping position and the dumping of thesame and the, resettion with respect to the 'by suitable means, hereSerial No. 657,263.

ting of the same may all be readily accomplished by the movement of thetractor, the locking and releasing being controlled at will b theoperator of the outfit. 1

n t is case a draw bar connects the scoop to the draft member 7 of thetractor. This draw bar consists of a front or leading member or link 8pivoted at 9 to the draft member 7. The rear end of the link 8 ispivoted at 10 to a link or pair of'links 11 extending rearu-ardly andconnected at 12 to the upwardly extending portion of a bracket 13 whichis in this case attached to the middle of'the back 3 of the scoop.

Slidably mounted on the main link 8 of the draft device'there is a frame14 that may comprise an inverted channel iron 15 straddling the link 8and suitabl secured thereon by a transverse cleat or bar 16 to preventthe member 15 from vertical move ment, and from the forward end of thesliding member 15 there extend rearwardlyand outwardly braces 17 on eachside, the rearmost ends of which are connected to respective pivots 18that may be mounted on one or another of a series of apertures 19 ineach of the. side walls-4 of the scraper body. The frame 14: furtherconsists of a rear set of diagonal braces 20 converging toward and alsoarranged on the respective pivots 18,

the rear ends of the braces 17 and 20 on each side--overlapping and, ifdesired, being rigidly connected together to form a bodily removable andrigid frame.

For the purpose of locking the scraper 2 with its bottom in any'suitable angular posidraft link 8 and so as to vary its cutting angle orscraping angle with respect to the surface over which it is drawn, thesliding frame is adaptedto be locked to the link 8 at several positionsshown as compris-- ing a latch or pawl 21, the forward and upper end ofwhich is pivoted at 22 in suitable bearings' provided on the slidingmember 15 of the frame 14, the web of the sliding memberbeing slotted asat 15 to permit the up and down play of the latch or pawl 21. 1

The latch 21 may be formed as a part of a lever 24 which extendsupwardly from the pivot 22 to within convenient reach of the, operatorof the tractor from a position at the seat S.of the tractor. The latch21 is normally drawn downwardly through the in Figs. 4 and 5 withtheflanges turned upwardly, this channel iron being straddled by theinverted channel iron or link member 15.

The operation of the device as above dev scribed is as follows:

\Vith the tractor-moving in the direction of the arrow in Fig. 1 andwith the lower end of the latch 21 set against one of the pins 27, itwill be seen that the draft or force in the draft link 8 will betransmitted by the engaged pin 27 to the latch 21, and.

the latter being pivotally mounted on the sliding frame 15 will lock thelatter to the draft link 8 so that the power will be transmitted throughthe frame 14 to drag the scraper 2 along the surface.

The angle ofthe bottom of the scraper will-be determined by the distanceof one of the ins 27 engaged by the latch 21 from g the lin connection'12 at the back and top of the scraper. After the tractor with thescraper has been advanced a suflicient distance to secure the loadingof'the scraper, the operator. then has butto pull on the lever 24 todisconnect the latch 21 whereupon the connection between tlf'ejframe 14and" the draft link 8 being broken the'scraper i change 0 will tend torock on its front edge and rise on side shoes 28, that are provided forthat purpose, to the position shown in Fig. 3, this bein accomplished byreason of the H t the point of pull from the pivots 18 in the-sides ofthe scraper to the pivot 12 at the upper end of the bracket 13 to whichthe links 11 at the rear end of the draft member 8 are attached.

Haring in this manner secured the dumping of the scraper it is onlynecessary for the operator to back up the tractor 6 with the result thatthe scraper will be turned .downwardly on the shoes 28 to the horizontalposition shown in Fig. 1, and when the body of the scraper has assumedthe desired angular position it is locked at thev same by the stoppingof the reversing movement of the'tractor after which it can be ad ancedand the pulling frame 14 automatically connected by the latch 21 to thedraft link 8.

\Vhile. the means for changing the posi- 7 tion of the earth engagingelement is shown in connection with a road scraper of the shovel type,and this is the preferred application of the invention, certain featuresthereof are useful for changin the position of other types of earth-woring implements. The claims are therefore not to be considered as beinglimited to the particular form of implement shown, unless their termsare such as to require' such limitation.

Various changes may be made without departing from the spirit of myinvention as claimed.

' I claim: p

1. The combination with a tractor having a draft device, of an earthscraper of the shovel type, and a setting and tripping draft connectionbetween'the tractor and saidearth scraper, whereby when the tractor isadvanced said connection interlocks at selective positions to determinethe effective ground engaging angle of said earth scraper.

2. The combination with a tractor having a draft device, of an earthscraper of the shoveltype; and a setting and tripping draft connectionbetween the tractor and i said earth scraper, whereby when the' tractoris advanced said connection inter-" looks at selective positions todetermine the effective ground engaging angle of the earth scraper andby which means the earth scraper can be moved to inoperative positionwhile the tractor is still advancing and is attached to the earthScraper.

3.v ,The combination with a tractor having a draft device, of unearthscraper of the shovel type; and a setting and trippin draft connectionbetween the tractor an said earth scraper, said connection locking theearth scraper in 1 operative position when the tractor is advanced andoperative to adjustably interlock at a selectedone of a plurality ofpositions when the tractor is backed up after said scraper has beenmoved. to inoperative position.

4. An earth working machine having means for attachment to draft means,said attachingmeans including a draft link' connected at its rear end tothe back of the earth workingmachine; a sliding device mounted on thedraft link and connected pivotally to the earth working machine;and'means for locking the sliding device at selective positions to thedraft link.

5. A connecting device attachable to an earth working implement andattachable to a tractive means; said connection comprising-a main draftbeam to be hitched at one end of the tractive means and to be pivotallyconnected at its other end to the implement; and an adjustable slidingmember with means to lock it in selective positions on the draft, beam;said member pivotally connectible to the implement at a point in whenthe sliding member is disconnected the device is operative to shift theimplement to another position.

('3. An earth working machine having means for attachment to a draftcleri -e inluding a draft link connected at it s"t\%a lr end to the backof the earth working marhine a sliding derive mounted on the draft linkand connected pivotally with the earth working machine, a latch mountedon one of said parts and a plurality of pins or stops mounted on theother of said parts for locking the sliding device at selectivepositions to the draft link.

7. A connecting device attachable to an earth Working implementandattachable to tractive means; said connection comprising a main draftbeam to be hitched at one end tothe tractive means and to be pivotallyconnected at its other end to the implement,

